[SOLVED] Integrated ATI RadeonTM 1250 and UI2 issue

[nite_man]

Hi,

According to wiki page (http://wiki.linuxmce.org/index.php/Display_Drivers#ATI_Chipsets) ATI cards with the latest drivers should work well with UI2 with overlay and resolution 1080p. I have Integrated ATI RadeonTM 1250 with HDMI output on my MD. I installed those drivers after adding that MD and chose UI2 with overlay. Every works fine except Aspect Ratio window (that known issue) and displaying the list of Video files. I have about 50 movies with covers in the Video section. After pressing the button Video on the on-screen Orbiter the screen becomes black. It displays just frame on the top of the screen and rose cursor. Nothing more. Strange thing because the list of Pictures and playlists (there is no any image) are displayed fine. With UI1 and 1080p the list of video files is displayed.

Any idea why it happens and how to solve that?

Thanks in advance.

[totallymaxed]

Hi,

According to wiki page (http://wiki.linuxmce.org/index.php/Display_Drivers#ATI_Chipsets) ATI cards with the latest drivers should work well with UI2 with overlay and resolution 1080p. I have Integrated ATI RadeonTM 1250 with HDMI output on my MD. I installed those drivers after adding that MD and chose UI2 with overlay. Every works fine except Aspect Ratio window (that known issue) and displaying the list of Video files. I have about 50 movies with covers in the Video section. After pressing the button Video on the on-screen Orbiter the screen becomes black. It displays just frame on the top of the screen and rose cursor. Nothing more. Strange thing because the list of Pictures and playlists (there is no any image) are displayed fine. With UI1 and 1080p the list of video files is displayed.

Any idea why it happens and how to solve that?

Thanks in advance.

Hi Michael,

We're using xorg-driver-fglrx_7.1.0-8.37 with ATI X1250 onboard chipsets sucessfully with UI2 + Overlay and we do not see the display issues your seeing. The only slight issue we see is that when we have any overlayed menus on screen the video frame rate of the movie behind it falls of considerably... but thats about it as dfar we can see.

Cheers

Andrew

[ogir]

Hi Michael,

i had the same problem some days ago with a radeon 8000 series (i think it was a 8600). Anyway, i also had the blank screen. tried to resetup the MD, but for me, it didnt work.
The only thing that in fact worked was switching from the ATI to a GeForce (switched the aTI into the core, and the GeForce from Core to the MD).

Sorry, thats about all i can tell you.

Igor

[nite_man]

Hi guys,

Thanks for your replays. Andrew, that problem seems also strange for me. Because the grid for the rest lists - Playlist, Pictures, Audio - is displayed correctly. Even they have thumbnails. Here is info from the logs:
- LaunchOrbiter.sh.log:

Code: [Select]

05      07/17/08 23:49:03.541           Using masked UI? YES <0x41001950>
01      07/17/08 23:49:04.227           qqq Pixmap_Create 0,0,1920,1080 transparent (reset), wmwindow 0x120000e <0x40800950>

Code: [Select]

05      07/15/08 21:29:06.316           Datagrid 5088.0.0.5176.3768 reseted! <0x40800950>
05      07/15/08 21:29:06.574           error_code==1 => ErrorText=='BadRequest (invalid request code or no such operation)' // bool X11wrapper::Pixmap_ReadFile(Window, const std::string&, Pixmap&, unsigned int&, unsigned int&, int&, int&) <0x40800950>
05      07/15/08 21:29:06.574           cannot read the file '/usr/pluto/orbiter/C52/dynamic object - 5088.0.0.2355.3767-18:72-0:0G:0.mask.xbm' // bool X11wrapper::Shape_PixmapMask_Copy(Window, const std::string&, Pixmap&, unsigned int, unsigned int, int) <0x40800950>
01      07/15/08 21:29:06.575           qqq Shape_PixmapMask_Copy ERROR! <0x40800950>
Igor, that clear solution to replace ATI by nVidia. But my MD has integrated graphical card So, I have to find solution.

[totallymaxed]

Hi guys,

Thanks for your replays. Andrew, that problem seems also strange for me. Because the grid for the rest lists - Playlist, Pictures, Audio - is displayed correctly. Even they have thumbnails. Here is info from the logs:
- LaunchOrbiter.sh.log:

Code: [Select]

05      07/17/08 23:49:03.541           Using masked UI? YES <0x41001950>
01      07/17/08 23:49:04.227           qqq Pixmap_Create 0,0,1920,1080 transparent (reset), wmwindow 0x120000e <0x40800950>

Code: [Select]

05      07/15/08 21:29:06.316           Datagrid 5088.0.0.5176.3768 reseted! <0x40800950>
05      07/15/08 21:29:06.574           error_code==1 => ErrorText=='BadRequest (invalid request code or no such operation)' // bool X11wrapper::Pixmap_ReadFile(Window, const std::string&, Pixmap&, unsigned int&, unsigned int&, int&, int&) <0x40800950>
05      07/15/08 21:29:06.574           cannot read the file '/usr/pluto/orbiter/C52/dynamic object - 5088.0.0.2355.3767-18:72-0:0G:0.mask.xbm' // bool X11wrapper::Shape_PixmapMask_Copy(Window, const std::string&, Pixmap&, unsigned int, unsigned int, int) <0x40800950>
01      07/15/08 21:29:06.575           qqq Shape_PixmapMask_Copy ERROR! <0x40800950>
Igor, that clear solution to replace ATI by nVidia. But my MD has integrated graphical card So, I have to find solution.

Yes the ATI driver shipped with LinuxMCE-0710 has these problems (but in other respects works fine)... the fix is to use xorg-driver-fglrx_7.1.0-8.37 as this works 100% with all screenss rendering/displyaying correctly  under UI2 + Overlay. We are shipping MD's using AT-X1250 GPU's now.

Andrew

[nite_man]

Yes the ATI driver shipped with LinuxMCE-0710 has these problems (but in other respects works fine)... the fix is to use xorg-driver-fglrx_7.1.0-8.37 as this works 100% with all screenss rendering/displyaying correctly  under UI2 + Overlay. We are shipping MD's using AT-X1250 GPU's now.

I install that driver and specify to use in xorg.conf:

Code: [Select]

root@moon50:~# dpkg -l|grep fglrx
ii  xorg-driver-fglrx                          7.1.0-8.37.6+2.6.22.4-14.9           Video driver for ATI graphics acceleratorsHave a look, please, my xorg.conf. Maybe I missed something:

Code: [Select]

Section "ServerLayout"
        Identifier      "XFree86 Configured"
        Screen    0     "Screen0"       0 0
        InputDevice     "Mouse0"        "CorePointer"
        InputDevice     "Keyboard0"     "CoreKeyboard"
EndSection

Section "Files"
        RgbPath         "/usr/X11R6/lib/X11/rgb"
        ModulePath      "/usr/lib/xorg/modules"
        FontPath        "/usr/share/fonts/X11"
        FontPath        "/usr/X11R6/lib/X11/fonts/misc/"
        FontPath        "/usr/X11R6/lib/X11/fonts/Speedo/"
        FontPath        "/usr/X11R6/lib/X11/fonts/Type1/"
        FontPath        "/usr/X11R6/lib/X11/fonts/CID/"
        FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/"
        FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
        Load    "dbe"
        Load    "extmod"
        Load    "record"
        Load    "xtrap"
        Load    "speedo"
        Load    "type1"
        Load    "glx"
        Load    "int10"
        Load    "v4l"
        Load    "dri"
EndSection

Section "InputDevice"
        Identifier      "Keyboard0"
        Driver          "keyboard"
        Option          "XkbLayout"             "us"
        Option          "XkbVariant"    "basic"
        Option          "XkbModel"              "pc105"
EndSection

Section "InputDevice"
        Identifier      "Mouse0"
        Driver          "mouse"
        Option          "Protocol"              "auto"
        Option          "Device"                "/dev/input/mice"
        Option          "ZAxisMapping"  "4 5"
EndSection

Section "Monitor"
        Identifier      "Monitor0"
        VendorName      "Unknown Monitor Vendor"
        ModelName       "Unknown Monitor Model"
        Modeline        "1920x1080" 148.5 1920 1960 2016 2200 1080 1082 1088 1125
        HorizSync       20-500
        VertRefresh     59-61
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option         "NoAccel"                               # [<bool>]
        #Option         "SWcursor"                              # [<bool>]
        #Option         "ColorKey"                              # <i>
        #Option         "CacheLines"                    # <i>
        #Option         "Dac6Bit"                               # [<bool>]
        #Option         "DRI"                                   # [<bool>]
        #Option         "NoDDC"                                 # [<bool>]
        #Option         "ShowCache"                             # [<bool>]
        #Option         "XvMCSurfaces"                  # <i>
        Identifier      "Card0"
        #Driver         "vesa"
        Driver          "fglrx"
        VendorName      "Unknown Vendor Name"
        BoardName       "Unknown Board Name"
        Option          "LinearAlloc"           "16384"
        #BusID          "PCI:0:2:0"
#       Option          "NoDDC"                         "true"
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "true"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option          "ConnectedMonitor" "DFP"
EndSection

Section "Screen"
        Identifier      "Screen0"
        Device          "Card0"
        Monitor         "Monitor0"
        DefaultDepth    24
        SubSection "Display"
                Modes           "1920x1080"
                Virtual         1920 1080
        EndSubSection
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "true"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option  "TVStandard"    "1080p"
EndSection

Section "ServerFlags"
        Option  "AllowMouseOpenFail"    "true"
        Option  "BlankTime"             "0"
        Option  "StandbyTime"   "0"
        Option  "SuspendTime"   "0"
        Option  "OffTime"               "0"
        Option  "AIGLX"                 "Off"
EndSection
Section "Extensions"
        Option "Composite" "false"
        Option "RENDER" "true"
EndSection

[nite_man]

Here is a screenshot with black area instead of list of video files - http://farm4.static.flickr.com/3060/2690354230_6179cfac07.jpg

[totallymaxed]

Yes the ATI driver shipped with LinuxMCE-0710 has these problems (but in other respects works fine)... the fix is to use xorg-driver-fglrx_7.1.0-8.37 as this works 100% with all screenss rendering/displyaying correctly  under UI2 + Overlay. We are shipping MD's using AT-X1250 GPU's now.

I install that driver and specify to use in xorg.conf:

Code: [Select]

root@moon50:~# dpkg -l|grep fglrx
ii  xorg-driver-fglrx                          7.1.0-8.37.6+2.6.22.4-14.9           Video driver for ATI graphics acceleratorsHave a look, please, my xorg.conf. Maybe I missed something:

Code: [Select]

Section "ServerLayout"
        Identifier      "XFree86 Configured"
        Screen    0     "Screen0"       0 0
        InputDevice     "Mouse0"        "CorePointer"
        InputDevice     "Keyboard0"     "CoreKeyboard"
EndSection

Section "Files"
        RgbPath         "/usr/X11R6/lib/X11/rgb"
        ModulePath      "/usr/lib/xorg/modules"
        FontPath        "/usr/share/fonts/X11"
        FontPath        "/usr/X11R6/lib/X11/fonts/misc/"
        FontPath        "/usr/X11R6/lib/X11/fonts/Speedo/"
        FontPath        "/usr/X11R6/lib/X11/fonts/Type1/"
        FontPath        "/usr/X11R6/lib/X11/fonts/CID/"
        FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/"
        FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
        Load    "dbe"
        Load    "extmod"
        Load    "record"
        Load    "xtrap"
        Load    "speedo"
        Load    "type1"
        Load    "glx"
        Load    "int10"
        Load    "v4l"
        Load    "dri"
EndSection

Section "InputDevice"
        Identifier      "Keyboard0"
        Driver          "keyboard"
        Option          "XkbLayout"             "us"
        Option          "XkbVariant"    "basic"
        Option          "XkbModel"              "pc105"
EndSection

Section "InputDevice"
        Identifier      "Mouse0"
        Driver          "mouse"
        Option          "Protocol"              "auto"
        Option          "Device"                "/dev/input/mice"
        Option          "ZAxisMapping"  "4 5"
EndSection

Section "Monitor"
        Identifier      "Monitor0"
        VendorName      "Unknown Monitor Vendor"
        ModelName       "Unknown Monitor Model"
        Modeline        "1920x1080" 148.5 1920 1960 2016 2200 1080 1082 1088 1125
        HorizSync       20-500
        VertRefresh     59-61
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option         "NoAccel"                               # [<bool>]
        #Option         "SWcursor"                              # [<bool>]
        #Option         "ColorKey"                              # <i>
        #Option         "CacheLines"                    # <i>
        #Option         "Dac6Bit"                               # [<bool>]
        #Option         "DRI"                                   # [<bool>]
        #Option         "NoDDC"                                 # [<bool>]
        #Option         "ShowCache"                             # [<bool>]
        #Option         "XvMCSurfaces"                  # <i>
        Identifier      "Card0"
        #Driver         "vesa"
        Driver          "fglrx"
        VendorName      "Unknown Vendor Name"
        BoardName       "Unknown Board Name"
        Option          "LinearAlloc"           "16384"
        #BusID          "PCI:0:2:0"
#       Option          "NoDDC"                         "true"
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "true"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option          "ConnectedMonitor" "DFP"
EndSection

Section "Screen"
        Identifier      "Screen0"
        Device          "Card0"
        Monitor         "Monitor0"
        DefaultDepth    24
        SubSection "Display"
                Modes           "1920x1080"
                Virtual         1920 1080
        EndSubSection
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "true"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option  "TVStandard"    "1080p"
EndSection

Section "ServerFlags"
        Option  "AllowMouseOpenFail"    "true"
        Option  "BlankTime"             "0"
        Option  "StandbyTime"   "0"
        Option  "SuspendTime"   "0"
        Option  "OffTime"               "0"
        Option  "AIGLX"                 "Off"
EndSection
Section "Extensions"
        Option "Composite" "false"
        Option "RENDER" "true"
EndSection

Heres a copy of an xorg.conf from a working AMD2 +4800 with ATI X1250 GPU;

Code: [Select]

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "fglrx"
Option "XvmcUsesTextures" "true"
Option "renderAccel" "true"
Option "NoDDCValue"
Option "UseEDID" "false"
Option "ExactModeTimingsDVI" "true"
Option "NoLogo" "true"
Option "NoBandWidthTest" "true"
Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
Option "DynamicTwinView" "false"
Option "UseEvents" "true"
Option "AllowGLXWithComposite" "true"
Option "AddARGBGLXVisuals" "true"
Option "ConnectedMonitor" "DFP"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
Modeline "1920x1080" 148.5 1920 1960 2016 2200 1080 1082 1088 1125
HorizSync 20-500
VertRefresh 59-61
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Defaultdepth 24
SubSection "Display"
Modes "1920x1080"
Virtual 1920 1080
EndSubSection
Option "XvmcUsesTextures" "true"
Option "renderAccel" "true"
Option "NoDDCValue"
Option "UseEDID" "false"
Option "ExactModeTimingsDVI" "true"
Option "NoLogo" "true"
Option "NoBandWidthTest" "true"
Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
Option "DynamicTwinView" "false"
Option "UseEvents" "true"
Option "AllowGLXWithComposite" "true"
Option "AddARGBGLXVisuals" "true"
Option "TVStandard" "1080p"
EndSection

Section "ServerLayout"
Identifier "Default Layout"
  screen "Default Screen"
EndSection
Section "Module"
Load "glx"
Load "dbe"
Load "extmod"
Load "record"
Load "xtrap"
Load "speedo"
Load "type1"
Load "int10"
Load "v4l"
Load "dri"
EndSection
Section "Extensions"
Option "Composite" "false"
Option "RENDER" "true"
EndSection

All the best

Andrew

[nite_man]

It seems that it was issue with display. I tested it on the real TV and it's ok

[indulis]

Andrew,

I have managed to manually install the fglrx driver successfully (fglrxinfo shows ATI, fgl_glxgears works).  Catalyst 8_9 version.

When I start Linuxmce orbiter, I get the menus, but once the photo slideshow starts, the menus disappear behind the photos.  They blink on, then the photo seems to overlay them.  I get into TV, and when I press the mouse right button I get glimpses of Mythtv behind the black screen- it blinks on then gets overlaid with black again.

Aaargh!  I've spent all weekend stuffing around with video drivers!!!!

I may try the older catalyst version.  Where did the download of this version of the driver come from?  Did you still have to blacklist the old fglrx driver?

Any other ideas?  What about glxinfo? Mine is still showing Mesa.  Could that be the problem?

PS I used your xorg.conf from this thread and used it, worked OK

[indulis]

OK I have now set up the machine as hybrid core/MD, and with the orbiter as the main GUI.  Now I am just getting X crashes at the end of the orbiter starting up.  This is using UI2, tomorrow I will set up again with UI1 but I'm sure this will work fine.

This is driving me crazy, but I don't want to give up on the ATI graphics when I am this close, and Andrew says that he has had the X 1250 video working fine. 

I've also turned off the "sideport" (dedicated graphics memory) on this motherboard, so it is back to using shared memory.

What's the best way to troubleshoot this- report it as a bug?  It'd be really good to get this going, but I am running out of patience, and will either go back to UI1 (and hope that UI3 and/or LinuxMCE 8.04 fix the problems), or buy an Nvidia graphics board.

I've got the Xorg.0.log file with some crash info in it.  Note that the machine does not crash, just X.

[tschak909]

*hmm* everybody hoping that the next release will fix the problems, nobody willing to actually help. Tired of all you people.

There is no UI3, there will never be a UI3 unless someone buckles down, takes charge, and hacks.

ATI support will happen, when someone takes on the task, and does the necessary script work to tie it into the AV Wizard.

If you people want it so much, then dig in and make it happen.

-Thom

[indulis]

Thom,

Please don't <hmm> at me, I've been spending days trying out the various ATI drivers available, and methods to install, and documenting them in the forums as I can (and will put the resolution in the WIKI when I can and when it is back up).  Think you can call this digging in.  Or perhaps you haven't read the post in its entirety.

I'm not expecting UI3, I just know that there are issues with UI2 on ATI, and want to know what is the best path to getting them solved with the ATI video card.

If I didn't care, I'd just go into my BIOS, switch over to my Nvidia card (which I know works), and wipe my hands of it, saying "oh well its working for me, too bad for ATI support in LinuxMCE".  As it is I've spent probably 20 hours tying combinations of repository and ATI proprietary drivers and installing and reinstalling LinuxMCE (I am getting pretty good at that  )

And I did ask about the best way to get the problem resolved- it is likely to be an interaction between the ATI drivers and the graphics functions being used in LinuxMCE (e.g. overlay order is not correct).  So at some point someone that knows the UI graphics programming in LinuxMCE has to talk to someone at ATI to figure out why it is crashing and not overlaying correctly.  And that is not me.  I can do scripting, documentation, testing, but if we want to fix this within the next 2 years (the time it would take me to become proficient to that depth) then this task is for someone else to do!

I am not asking for ATI support into LMCE as a seamless integration.  Just want it not to crash when I try to use it, and be able to use UI2 with the ATI video and be able to actually see behind the "wall of black" that keeps getting painted over the UI (my previous posts document this- the UI is definitely running, but it "flashes" on for 1/4 sec or so when I toggle between virt console 1 and VT 7), and then the screen goes black again.

ATI have been a pain in the past (I know based on my Mythtv experience), but deserve some support now as they have opened up most of their programming doc to the open source community!

PS I actually have an Nvidia graphics card-6200 but it is so slow on UI2 that if I want to use UI2 I would either use ATI X1250 on the motherboard or buy a new Nvidia card.

[tschak909]

if your nvidia 6200 is slow, something is incorrectly configured.

I've used Nvidia 6200's in the past up to 1080i, for installations. they are a little, but only a little slow for 1080p.

-Thom

[colinjones]

Indulis - seriously, if you have the nVidia, use it. You are just going to cause yourself so much of a headache. The 6200 will be just fine. Have you troubleshooted the performance issue? Which driver does the xorg.conf file say it is using? Also, read through the Xorg.0.log file very carefully, as you may find some conflict that is causing a critical module not to load and so preventing various parts of hardware acceleration being used....

Have you gone to KDE and run glxgears? What rate do you get? BTW, what part is actually slow?